Roller window-blind fitting



Jan. 19 1926 1,570,574

C. NEVATT ROLLER WI NDOW BLIND FITTING Filed June 1924 fin/e075,;

C //e z/a iii Patented Jan. 19, 19 26. M

cHARnEs 'NEVAT'T, *or GLASGOW, SCOTLAND.

ROLLER WI DOW-BLIND FITTING.

Application filed June 11, 1924; Serial no. 719,410.

To all whom it may canoe-1%: Figt-l is a side view partly sectioned, 55 Be it known that I, CHARLES NEVATT, of showing one form of a blind roller ratchet 23 Darn-ley Gardens, 'Pollokshields, Glasgow, spike fitting. Scotland, a British subjectfhave invented Fig. 1' is an end view thereof looking certain new and usefulImprovementsin or from the point of the spike and with the Relating to Roller WVindow-Bli'nd Fittings, roller removed. 60 of which the following is a specification. Fig. 1 is a view of the end-plate to be Thepr'esent invention relates to thje-fitassociated with the spike-fitting;- tings for window blind rollers and more Fig-Zis a view similar to Fig. 1 showing particularly to those used for solid rollers; a modifiedform of spike-fitting.

' Solid blind rollers; as-at present constru'ct- Fig. 2 is an end view of the spike-fitting; 65 ed, are usually provided with 'a cap or disc Fig-J2" is a view of the accompanying endscrewed to each end thereof, thecap or disc plate; at the one end of therollercarryingmerely Fig. is a sideview showing *a second a pivot pin:f0rmedintegral-with it and modifiedform'oi spike fitting.

adapted to be located in a bearing-carried Fig.8 is an end view of the same; 70 by a bracket mou'ntedon the-windowframe Fig. 3 represents the associated end or on-a lath secured thereto, whilethe cap plate; V or disc at'theotherendpf the roller carries Fig.4 is a side view of a spike-fitting for a similar pivot pin", whereon-is mounted a the cord attheopposite end of the roller;

ratchet wheel adapted to be held by a dc Fig. a is an end view thereof; I 75 tent on the adjacent supporting bracket. Considering the first form of the inven- In assembling the fittingsi' on the roller tion as illustrated by Figs. 1, Panel 1, the these capsor discs have each tobe secured ratchet spike-fitting comprises a spike l to an end of theroller by three or tour having an end-plateretaining boss 2, and a screw-nails,-an operation involving-time and pivot or journal 3 for'the roller; a ratchet 80 trouble.- Further, 'asthe fittings. are madewheel 4 loosely mounted on the portion 3 of integral with the caps'or discs, they have to the spike and held frictiona-lly in place by be made in various sizes corresponding to spring washers 5, 5; and a collar 7 pinned rollers ofvario'us diameters so'that'a great to the part 3 and retaining the spring .many differentfittings have to be keptin washers and ratchet whcel'in place on the stock. v fitting. The washers shown have radiating The object of thepresentinvention is to arms 6, one ofthe washers being disposed provide end-fittings= for blind rollers in between the boss 2 and the wheel i, and the which the only part" that requircs to be other between the wheel 4L and the collar 7. changed with variatiOnsin-the diameter of hen it is desired to have a cord at this the rolleris the cap or disc, hereafter called end of the roller for raising the blind the the endplate, the remaining parts being of boss 2 may be extended axially to provide one standard size adapted to be associated a drum therefor. v 0 with the said end-plates of varying size, The fitting is, on the right hand side of whereby the innnber of parts required for a theboss 2, provided with a round driving complete range of'blind rollers niay be re portion having a point 8 at its extremity duced, and; furthermore, to provide an endandbetween the driving portion and the boss lit-ting which will bemoreconvenientlyrand 2 it has a substantially square portion at J, 45 expeditiously assembledandsecured than and which is gradually expanded on two hitherto. 7 sides until'at the part 10 next the boss 2 it As the end fittings apart froin theendissubstantially rectangular having two sides plates, comprise a spike they will behereinapproximately doublethe'width oi the other after referred to as spike-fittings. two'sidesi These'broad sidesafter the spike 50 Convenient constructions of the invention fitting has been driven into the roller 13 will now'be' described-b way of example give a large'bearing surface adapted to proand with reference to the accompanying vent relative rotation of the spike-fitting drawings. and the roller under the action of the blind 011 the drawings operating means,

The end-plate 11 for this spike-fitting is a separate disc having an inwardly projecting flange 12 to encircle the end of the blind roller 13. At its centre this disc is provided with an aperture 11 of a shape to fit the rectangular portion 10 of the spike. A part of the roller 13 is shown, in section, merely to indicate the relative positions of the parts.

Figs. 2, 2, and 2" illustrate a modified construction of the invention wherein the ratchet wheel spike-fitting is provided with a round spike 1 having side flutes or grooves 14- in its driving portion to prevent its turning in the roller, this being instead of the rcctaiugular portion 10 aforesaid; and for the same purpose, projections 21, 21, may he made on the boss, these projections passing through holes 22, 22, in the end-plate and entering the roller when the spike-fitting is driven into place. The end plate has a flange 12 and a circular aperture 11 The remaining parts are precisely similar to those above described.

A further modification oi. the ratchet wheel spikeditting is shown in Figs. 3, 3 and 3 in which the spike 1 has two parallel fiat faces 15, 15, formed on its driving portion with the object of increasing resistance to relative rotation of roller and pin; projections 21 may also be used. In this case the end plate has a flange 12 and an aperture 11 of the shape shown in Fig. 3 In some cases I may use only a single spring washer 5.

In practice the end-plate 11 is driven on to the end of the roller 13, and thereafter the spikefitting 1 with its ratchet wheel 1 and springs 5 afiixed, is driven so that the driving portion 1 enters into the roller end through the aperture 11, 11 11, in the mid-plate. It will be obvious no screws are required as the spike is firmly secured in the wood and, by its boss 2, holds the end-plate in position.

The other end of the roller is or may be provided with an end plate similar to that already described. The corresponding spikefitting for this end is made as shown in Figs. 1 and 41 It has a pointed driving portion 16, a cord drum or part 17 with an aperture 18 therein to receive the end of. the cord, a disc 19 secured at one end of the drum. to act as a guide to the cord and a journal portion 20 to be received in a bearing in the supporting bracket. The driving portion of the spike may be formed in any one of the three ways described and illustrated with reference to Figs. 1 to 3 and it may have projections 21, 21. If no cord is to be attached at this end, the driving portion of the spike may be merely of circular section having a boss to hold the end-plate in position.

It will be appreciated that with endfittings of this sort, the only parts that re quire to be altered for d'ii'l erent sizes of blind rollers are the end-plates, all the other parts remaining exactly the same ior every size. This naturally is a great convenience, considerably cheapens manufacture, requires the stocking of a much smaller number of parts for a complete range of blind rollers, and greatly facilitates the operation of fitting up the roller for use.

The ratchet spike fittings complete with ratchet and springs would be supplied ready for bein secured to any blind roller and the cord spike-fittings would also be supplied in the same way. The end plates would be supplied separately and would, of course, be of different diameters to suit different rollers.

The spike fittings are driven into the roller by simply striking the portions 3 or 20, as the case may be, with a hammer.

Having now fully described my invention what 1 claim and desire to secure by Letters Patent is:

1. End fittings for a solid window blind roller, each comprising a disc having a peripheral flange to fit the normal end of the roller, and a spike member passed through the said disc into the roller and adapted to prevent rotation of the disc, said member comprising at its outer end an enlarged boss, at its inner end a driving portion, and formed between the boss and driving portion to present a trunk of rectangular section which from the part next the driving portion is gradually expanded to the part next the boss.

2. End fittings for a solid window blind roller, each comprising a disc having a peripheral flange formed to fit the normal end of the roller, a spike member passed through the disc into the roller and adapted to prevent rotation of the disc, and means to prevent rotation of the spike in the roller, one end fitting having a cord drum integral with the spike, a disc at the end of said drum, and a pivot bearing beyond the disc, the other end fitting having a plurality of collars arranged in spaced relation on the spike beyond the disc, a ratchet wheel loosely mounted on the spike between the collars, and a plurality of spring members supported on the spike and bearing between the respective sides of the ratchet wheel and the adjacent collar.

In testimony whereof I atlix my signature.

CHARLES NEVATT. 

